I tried to mount an ext4 partition by double clicking it.
After that in its properties I found that permissions were only to root.
I tried to create a new folder in it but that option was not allowed so what I did was starting terminal from /media/username/ and then
sudo chmod 777 "partition name"
After that permissions now still exclusive to root but I can do whatever I couldn't do before.
My question is, was that operation incorrect? What is the best approach to solve such a problem?